Cosmetics Products Analysis

Sunscreen when we are going to test the SPF, can we dissolve it in water? And if the ethanol diluted with water will be able to dissolve the sunscreen? Thank you.

Hello, the SPF measurement must be measured in the form of the formula that you want to measure. Do not dilute or dissolve anything, for example, if the formula is a gel sunscreen. or sunscreen It must be measured in the condition that the formula is gel. or cream Not to be dissolved or diluted in any way.